Commentaries: Art. 569

If an heir dies before disclaiming or accepting an inheritance, the right to disclaim passes to his or her heirs.
For such heirs, the disclaimer time limit begins on the date on which they learned that the inheritance passed to the deceased heir and ends no sooner than the date on which the time limit for disclaiming the inheritance from the deceased heir expires.
Where such heirs disclaim the inheritance and it passes to other heirs who previously had no succession rights, the disclaimer time limit for the latter begins on the date on which they learned of the disclaimer.